Outline of waste incineration plant facilities (Japanese version)

The collection vehicle that has collected combustible waste drops the garbage into the "garbage pit" that stores the garbage once stored at the "input stage".
In the input stage, hundreds of collection vehicles enter and exit a day, so monitoring is performed in the input monitoring room so that there is no accident and improper garbage is carried in.
The "input door" detects the collection vehicle and automatically opens and closes.
The collection vehicle on which the carrier carries up drops garbage directly from the input door to the garbage pit.
When manually dropping garbage from a car where the loading platform does not lift, work safely by receiving garbage in the dumping box so that people do not fall into the garbage pit, then remove the garbage according to the slide, so that people do not fall into the garbage pit, If you find an inappropriate carry-in, you can prevent importing.

The large space for temporarily storing garbage brought by a collection truck is the garbage pit.
Grab the garbage with a "garbage crane" and put the garbage from the "garbage pit" into the "incinerator".
The important thing at this time is to stir the garbage and make it uniform before inserting.
Recyclables and incombustibles are finely separated at the time of garbage collection, so in principle, only "combustible waste" is transported to the garbage incineration plant, but the "combustible waste" contains moisture. Like kitchen garbage and "flammable garbage" like paper.
Therefore, stir the garbage crane uniformly (garbage stirring) to make garbage easier to burn.
The "garbage crane" is operated by a qualified operator.
The cranes continue to move without a 24-hour rest, while performing autonomous driving as needed, such as at night.

Garbage put into the "incinerator" burns as the garbage itself as fuel.
Therefore, once the garbage is lit when the incinerator starts, no combustion materials will be used until the incinerator is stopped.
In addition, by continuing to burn at a high temperature of 850 to 950°C, odor is removed and the generation of dioxins is suppressed.
In addition, the air required for garbage incineration is taken from the "garbage pit" that stores garbage, and it is devised so that the odor of garbage does not come out of the garbage pit.

The ash pit is a place where ash generated by incineration is stored.
The ash from the incinerator is transported by an "ash conveyor" and stored in the "ash pit".
In addition, soot and dust removed by exhaust gas treatment equipment is also transported by another conveyor, treated with chemicals, etc., and stored in a dedicated ash pit.
Grasp the ash with an "ash crane" and load it on a truck that carries ash.
The ash loaded here is transported to waste landfill.
In order to effectively utilize the limited landfill over a long period of time, it is necessary to thoroughly separate waste and reduce the amount of garbage itself.

Exhaust gas treatment equipment is a facility that removes harmful substances from exhaust gas generated during incineration of garbage.
First, the exhaust gas is rapidly cooled with a temperature reduction tower to prevent the resynthesis of dioxins.
After that, the exhaust gas is passed through a device called a "bug filter" to remove soot and dust, which is fine dust in the exhaust gas, and dioxins adsorbed by chemicals.
In addition, harmful components contained in exhaust gas are removed by chemicals such as slaked lime, activated carbon, and ammonia.
The exhaust gas treated in this way is released from the chimney into the atmosphere.
Yokohama City manages exhaust gas with a numerical value that is stricter than the "regulation standards" stipulated by law.
In addition, by publishing the measurement results of exhaust gas components after treatment, we are working to ensure the safety of neighboring residents.

A boiler is a device that makes steam by boiling water using the heat generated during incineration of garbage.
The generated steam is sent to a steam turbine generator and used for power generation.
In addition to being used for air conditioning and heating and hot water supply in the incineration plant, it is sent to an adjacent residual heat utilization facility to be used as a heat source for heated pools and bathing facilities.

A steam turbine generator is a facility that converts high-temperature and high-pressure steam generated by a boiler into electrical energy.
The generated electricity is used in the incineration plant and in nearby facilities, and the rest of the electricity is sold to electric utilities.
In order to increase the power generation of steam turbine generators, it is necessary to improve the combustion efficiency of the incineration plant.
For this reason, Yokohama City asks for cooperation such as draining kitchen garbage, which contains a lot of water, and drying pruned branches before putting out garbage.

The garbage incineration plant operates 24 hours a day without a break.
Therefore, in the Central Control Room, operators operate and monitor the incineration plant 24 hours a day, 24 hours a day.
The LCD monitor displays and monitors images of cameras mounted at various locations in the incineration plant.
The monitor in front of the operator displays real-time data such as temperature, pressure, and exhaust gas concentration.
Depending on these circumstances, automatic control by computer and manual operation by operators can monitor and remotely control on-site equipment, ensuring optimal combustion is always maintained.

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